Click Tasks in the Workspace Menu, then click Check Out Schedule.
If the task schedule is already checked out, a Check In Schedule link displays on the Tasks menu, and a Check In button displays at the top of the List and Outline views. For more information, see Checking Out the Task Schedule for Editing.
In the Tasks area of the Workspace Menu, click Gantt Chart.
The Gantt Chart displays in a new window.
Select the task that will follow the task you are going to insert. For example, to add a new task between Task 1 and Task 2, select Task 2
Click theInsert Task icon () on the toolbar. The new task is created above the selected task: